Hi reeby, and welcome!
I understand what you are going through. I went through the complete cycle of irritability, crying, anger, and paranoia. I found that my ex was getting a little tired of all of it, and the more he avoided my pleas for his help, the worse I felt. He couldn't take it any longer, and its been 3 weeks since he left, and he's not coming back, its not easy, but I believe it will make me a stronger person.
It is important that you talk to your doctor about the meds and the way you feel. I was not followed up by my doctor, and it ended up that the meds weren't working anymore, matter of fact they were making my moods worse.
I as you have few friends, matter of fact none really. I moved a year ago, and don't know many people here, but I will try to join a community center to make friends, and I will try to do some volunteering. I encourage you to try the same, and I believe also that Dongato is right about your boyfriend. Write him how you feel, and let him come to you when he feels the time is right he will discuss his feelings about what you wrote.
take care
